Hop on: discover some of the world's most colorful and curious-looking frogs -

Long-legged and pop-eyed—welcome to the wonderful world of the frog!

With their fixed grins and colorful coats, these amphibians are some of the most endearing creatures on the planet. They're also among the deadliest!

Click and hop through this gallery of fantastic frogs.

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Strawberry poison dart frog - This bright, beady-eyed frog is renowned for its widespread variation in coloration. Found in Central America, the species secretes a highly effective toxin. (Photo: Wikimedia/CC BY 2.0)

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Mexican leaf frog - Found only near water in the subtropical or tropical dry forests of Mexico, this species is distinguished by its enlarged toes and golden-flecked eyes.  

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Vietnamese mossy frog - At first glance, the mottled green and brown skin coloring on this unusual species resembles moss growing on a rock. Hence its name! A native of Vietnam, it's also found in pockets of China and Laos.

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Yellow-banded poison dart frog - A resident of northern South America in countries including Venezuela, Guyana, and Brazil, this frog is highly poisonous.

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Splendid leaf frog - For the most part nocturnal, this predominantly tree-dwelling species inhabits northwestern Ecuador, through western Colombia and Panama to the most southerly region of Costa Rica.

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Argentine horned frog - An humongous frog with an appetite to match, this is the most commons species of horned frog. It's endemic to South America. 

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Splash-back poison frog - Named for its appearance as if splashed with orange paint, this native of the Amazon Basin in Brazil, the species is threatened by deforestation and flooding caused by dams. 

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Giant monkey frog - Known also as the blue-and-yellow frog, this amphibian is found in the Amazon basin. 

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Blue dart poison frog - Its distinctive hunchback posture and azure complexion distinguishes this poisonous native of Suriname and the far northern reaches of Brazil. (Photo: Wikimedia/CC BY-SA 3.0)

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Red-eyed tree frog - Its vibrant green body, bright red eyes, and inquiring gaze makes this frog one of the most endearing of amphibians. It ranges from Mexico through Central America, to Colombia.

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Green and black poison dart frog - This highly toxic animal is at home in the trees of Central American and northwestern parts of South America.  

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Borneo eared frog - Recognized for its pointed, angular profile, this species is endemic to Borneo, and is also found in Brunei, Indonesia, and Malaysia. (Photo: Wikimedia/CC BY-SA 4.0)

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Golden poison dart frog - Despite its diminutive and innocuous appearance, this is one of the most poisonous creatures on Earth. Endemic to the Pacific coast of Colombia, these frogs are lethally toxic.

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Phantasmal poison frog - An endangered species endemic to Ecuador, this handsome frog stands out for its bold longitudinal stripes. 

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Dyeing dart frog - Another frog that can vary enormously in color, this species is distributed throughout northeast South America. Bright colors warn of its high toxicity.  

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Three-striped poison dart frog - Distributed throughout Brazil, Bolivia, Colombia, and northeastern reaches of South America, this species is threatened by habitat loss. 

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Glass frog - A tree dweller, this frog is so named because the abdominal skin of some species is transparent—their internal organs are visible through the skin. Its found throughout Central America and parts of South America. (Photo: Wikimedia/CC BY-SA 4.0)

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Red-backed poison frog - Native to the Amazon rain forest of Peru and Ecuador, this small, moderately toxic species advertises its poison with a bright red dash over its head and upper spine. (Photo: Wikimedia/CC BY 2.0)

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Panamanian golden frog - As its name suggests, this frog is endemic to Panama. Critically endangered, some experts believe it may already be extinct in the wild. Their toxin is extremely potent. (Photo: Flickr/CC BY 2.0)

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Granular poison arrow frog - Small and with slender limbs, this diminutive species is named for its finely granulated skin. It's found in Panama and Costa Rica. (Photo: Wikimedia/CC BY-SA 4.0)

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Upper Amazon tree frog - Resplendent in its bright sunflower markings, this frog is distributed in the upper Amazon Basin of Bolivia, Brazil, Colombia, Ecuador, and Peru. 

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Harlequin poison dart frog - Look for this frog on the floor of tropical rain forests in western Colombia. A highly toxic species, it's also a very adaptable creature and can survive in disturbed habitats. (Photo: Flickr/CC BY-ND 2.0)

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Tiger-striped leaf frog - Threatened by habitat loss, this sleek amphibian still enjoys a toehold in several South American countries. (Photo: Flickr/CC BY-SA 2.0)

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Mimic poison frog - Named for mimicking the splash-back poison frog, this native of eastern Peru secretes a small amount of poison due to its small size. 

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Wallace's flying frog - Armed with long limbs, with fingers and toes webbed right to the tips, this frog can effectively parachute to the forest floor from its lofty habitat high in the trees, where it's normally found.

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Malagasy rainbow frog - Sometimes described as the "ornate hopper" for its intricately patterned skin, this tiny, rotund species is endemic to central areas of southern Madagascar. (Photo: Flickr/CC BY-NC-ND 2.0)

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Long-nosed horned frog - Singular in appearance and also known as the Malayan horned frog, its horn-shaped snout and upper eyelids lend this species its descriptive name and character.   

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Golden mantella frog - Another species unique to Madagascar—but also one of the country's most threatened animals—its vibrant color warns predators that the frog is poisonous. 

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Australian green tree frog -

Native to Australia and New Guinea, its docile nature has made this species a favorite exotic pet throughout the world. Interestingly, its skin secretions have antibacterial and antiviral properties.

See also: Humans raised by animals

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